first commit

sim/tb_isp.v

@@ -0,0 +1,33 @@
+`include "isp.v"
+`default_nettype none
+
+module tb_isp;
+reg clk;
+reg rst_n;
+
+ isp
+(
+    .rst_n (rst_n),
+    .clk (clk),
+);
+
+localparam CLK_PERIOD = 10;
+always #(CLK_PERIOD/2) clk=~clk;
+
+// initial begin
+//     $dumpfile("tb_isp.vcd");
+//     $dumpvars(0, tb_isp);
+// end
+
+initial begin
+    #1 rst_n<=1'bx;clk<=1'bx;
+    #(CLK_PERIOD*3) rst_n<=1;
+    #(CLK_PERIOD*3) rst_n<=0;clk<=0;
+
+
+
+    $finish(2);
+end
+
+endmodule
+`default_nettype wire